Star Wars Revelations

Star Wars Revelations is a low-budget fan film with high production values. I haven't seen it yet (its a 260Mb download and I'm hoping it'll be available as a torrent soon) but I've heard its really good. It's around 40 minutes long and has everything you'd expect in a Star Wars movie -- space battles, lightsaber duels and everything.

You can read more about it, and download it, at the Star Wars Revelations website.